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When running more than one subwoofer in an enclosure, you'll need to decide between going with a single chambered box (where all subwoofers run in the same airspace), or a multi-chambered box (where each subwoofer has its own airspace). Single chambered boxes have no dividers between the subwoofers, and the airspace inside the box is the internal volume for one subwoofer multiplied by the number of subwoofers in the box. Multi-chambered subwoofer boxes are built so every subwoofer is isolated inside the box in a sealed chamber.
It is usually best to have each subwoofer running in its own isolated airspace, especially in a sealed box. This is because if one of the subwoofers blow in a single chambered box, it could cause the other subwoofer(s) to unload and you could end up ruining the subwoofers that aren't blown.
Ported enclosures are the only type of enclosures that we would recommend going with a common chambered box. This is because it allows you to have a single slot port or a couple round ports acting as the port for all subwoofers in the box. This will generally require less space than having separate ports in separate chambers for each subwoofers. The possibility of a good subwoofer unloading when another fails is less likely in a ported box as well.
In general, if you're going with a sealed box, it should have separate chambers for each box. However, if you're going with a ported subwoofer enclosure, it is usually acceptable to go with a common chambered box. If the subwoofer box is ported, you have the space, and the dimensions will allow it, it would be best to go with a multi-chambered box so each subwoofer will be isolated. |
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